黄土高原西部荒漠草原植被恢复的土壤水分管理研究

摘要/Abstract

摘要： 针对兰州地区荒漠草原带具有代表性的三种地带性植被：草本植被短花针茅、灌木植被珍珠猪毛菜、荒漠锦鸡儿，对其0~2.0 m的土壤含水量进行了比较,同时对草本和灌木植被的根系进行了测定。结果表明：天然植被对土壤含水量的影响在1 m以上。随着土壤深度的不断加深,土壤含水量呈减少趋势而后趋于稳定。短花针茅区1 m以上含水量比珍珠猪毛菜和荒漠锦鸡区平均高1.08和1.21个百分点;1 m以下土壤含水量变化情况是:珍珠猪毛菜区最高，荒漠锦鸡儿区最低。本文在分析了兰州地区荒漠草原区土壤水分动态的基础上，提出了这一地区植被恢复的对策。

关键词: 荒漠草原, 天然植被, 土壤水分, 植被恢复

Abstract: The study compared soil moisture in 0~2 m layer under the three representative natural zonal vegetations in the Desert Steppe of Lanzhou area, they are the herbage of Stipa breviflora, the shrubs of S. passerina Bunge and C. roborovski; at the same time determined the roots distribution of natural herbage and shrub vegetation. The study results showed that the natural vegetation affected soil moisture mainly in the soil layer of 0~1 m, from which down soil moisture reduced, then came to the stabilization when the soil depth became certain deep. The mean soil moisture in soil layer of 0~1m under Stipa breviflora herbage was higher than that of under S. passerina Bunge and C. roborovski shrubs, and respectively with a increase of 1.08% and 1.21%. Below 1 m, the dynamic range of soil moisture was the highest under shrubs of S. passerina Bung, the lowest under the shrubs of C. roborovski. After analyzing the effect of natural vegetation on soil moisture in the Desert Steppe of Lanzhou area, the study had given some advice about vegetation rehabilitation of this area.

Key words: desert steppe, natural vegetation, soil moisture, vegetation rehabilitation

中图分类号:

Q945.17

张玉宝;谢忠奎;王亚军;李凤琴. 黄土高原西部荒漠草原植被恢复的土壤水分管理研究[J]. 中国沙漠, 2006, 26(4): 574-579.

ZHANG Yu-bao;XIE Zhong-kui;WANG Ya-jun;LI Feng-qin. Management of Soil Moisture for Desert Steppe Vegetation Rehabilitation in Western Loess Plateau[J]. JOURNAL OF DESERT RESEARCH, 2006, 26(4): 574-579.

参考文献

[1]王新平，张志山，张景光，等.荒漠植被影响土壤水文过程研究综述[J].中国沙漠,2005,25(2):196-201.
[2]Grason R B, Western A W, Chiew F H S.Preferred states in spatial soil moisture patterns: local and nonlocal controls[J].Water Resources Research,1997,33:2897-2908.
[3]罗哲贤.植被覆盖度对干旱气候影响的数值试验[J].地理研究,1985,4(2):1-9.
[4]Qiu Yang, Fu Baojie, Wang Jun, et al. Spatial variability of soil moisture content and its relation to environmental indices in a semi-arid gully catchment of the loess plateau, China[J]. Journal of Arid Environments,2001, 49:723-750.
[5]Vinnikov K Y, Robock A, Speranskaya N A, et al. Scales of temporal and spatial variability of midlatitude soil moisture[J]. Journal of Geophysical Research, 1996,101:7163-7174.
[6]Roelerk M, MaartenC B, FrankV L, et al.Self-organization of vegetation in arid ecosystems[J]. The American Naturalist,2002,160(4):524-530.
[7]Klausmeier C D. Regular and irregular patterns in semiarid regions[J]. Vegetation Science( Washington D. C.),1999,284:1826-1828.
[8]Brouwer B J, Barker A P, Gaze S R, et al .The role of surface water distribution in an area of patterned vegetation in a semi-arid environment, south-west Niger[J]. Journal of Hydrolodry,1997,198:1-29.
[9]陈学林, 巨天珍, 赵传燕. 兰州市灌木植被特征分析[J]. 西北师范大学学报,1993,29(4):49-53.
[10]高军，贾志文. 保护天然植被是干旱荒漠地区防风治沙的有效途径[J].内蒙古林业,2003,(1):31-32.
[11]杨文治,邵明安.黄土高原土壤水分研究[M].北京:科学出版社,2000.67-85.
[12]陈士辉,谢忠奎,王亚军,等.砂田西瓜不同粒径沙砾石覆盖的水分效应研究[J].中国沙漠,2005,25(03):433-436.
[13]王亚军,张志山,谢忠奎,等.黄土高原西北部西兰花集雨补灌效应研究[J].兰州大学学报(自然科学版),2003,39(03):64-68.
[14]王亚军，张志山，谢忠奎，等.黄土高原砂田西瓜覆膜补灌效应研究[J].中国沙漠,2003,23(3):300-305.
[15]王志强，刘宝元，王晓兰.黄土高原半干旱区天然锦鸡儿灌丛对土壤水分的影响[J].地理研究，2005，24（1）：113-120.
[16]Famiglietti J S, Rudnicki J W, Rodell M. Variability in surface moisture content along a hillslope: Rattlesnake Hill, Texas[J]. Journal of Hydrology, 1998，210: 259–281.
[17]杨新民.黄土高原灌木林地水分环境特性研究[J].干旱区研究,2001,18(1):8-13.
[18]穆兴民.试论黄土区旱地土壤水资源的地带性和非地带性[J].土壤学报,1999,36(2):237-243.
[19]李新荣,马凤云,龙立群,等.沙坡头地区固沙植被土壤水分动态研究[J].中国沙漠,2001,21(3):217-221.
[20]吴玉环，程国栋，高谦.苔藓植物的生态功能及在植被恢复与重建中的作用[J].中国沙漠,2003,23(3):215-220.